Editor's note: We have made a significant correction to this story. The man who originally reported calling police, now says he didn't make that 911 call. See Sentinel correction to this story. For the purposes of transparency, the original story is below, but it will be rewritten.

SANTA CRUZ - At least one person from the Broadway neighborhood where Monday's brutal stabbing occurred says he called police about what he thought was odd behavior from the man facing murder charges.

Don Adams, who works from his home on Broadway, said he called 911 Friday after seeing the man he believes was Charles Anthony Edwards III sitting near his office most of the day and night. He said police did not contact him. He saw the same man in the neighborhood again Sunday.

Edwards, the suspect in the brutal stabbing death of Santa Cruz business owner Shannon Kathleen Collins, appeared in court Wednesday. He requested the assistance of a public defender, but did not enter a plea.

The 43-year-old sat solemnly in an orange and white striped jail jumpsuit. Public defender Diana August asked to postpone his arraignment to May 22.

Prosecutor Celia Rowland asked Judge John Salazar to increase Edwards' bail to $2 million, in part based on a violent incident while in custody.

"In this custody I had a violent incident?" Edwards asked angrily.

Rowland was referring to an incident that happened in San Francisco. Salazar denied the request and Edwards' bail remained at $1 million.

Edwards, a convicted felon, is charged with murder in an incident that's sent shockwaves throughout the city. He also faces several special allegations, including use of a deadly weapon, and for having prior serious felony convictions.

In 1992, Edwards was convicted of felony assault with a deadly weapon, according to San Francisco court records. In 1996, he was convicted of battery and in 2000 convicted of making criminal threats.

The 2000 conviction led to a 16-month prison sentence that included a stint in Atascadero State Hospital, which provides psychiatric recovery services. Police declined to discuss what his mental state might have been at the time of the slaying.

No motive has been stated in Monday's unprovoked attack against Collins, who was walking from home to a hairdresser's appointment around 11:50 a.m. when she was stabbed on the 300 block of Broadway. Emergency dispatchers said they received four 911 calls about the attack. When officers arrived, they found Collins, 38, lying between two parked cars with several knife wounds. Edwards was arrested moments later about a block away.

Adams, a contractor and owner of Advanced Mechanical Services, said the man he believes to be Edwards "was sitting next to my office Friday. He was there around 2:30 p.m. and was there until about 11:30 at night. He was just sitting there - he had popcorn in his pockets and he was eating it and staring out at the street."

Adams said he thinks dispatch is tired of him calling about suspicious people in the neighborhood.

"He seemed like a real crazy guy," said Adams, who didn't talk to the man, but spotted him again Sunday across the street.

Police did not return a call Wednesday about whether police responded to Adams' 911 call.

Santa Cruz police spokesman Zach Friend said Wednesday that police were gathering video surveillance footage from businesses and homes near the attack.

It remained unclear why Edwards - a transient from the San Francisco - was in Santa Cruz for about a week before the slaying. Friend said Monday that police had not contacted Edwards before his arrest.

Wednesday afternoon, a police detective was interviewing Broadway neighbors about Monday's events. A makeshift shrine of flowers and a small sign rested against a picket fence by the spot where Collins was killed.

Wednesday, employees of Camouflage, the store Collins and her husband Ken Vinson own, reopened, saying it's what she would have wanted.

Tine Trujillo, who works at the store, said they set up a memorial guestbook for people to share their memories of Collins.

"The Camouflage family thanks the public for the outpouring of love, flowers and other items that people have dropped off in Shannon's memory," Trujillo said.

"We're also asking that the public respect the family's privacy."

Take Back Santa Cruz has planned a Monday march from Lower Ocean to downtown to mark a week since the slaying.

The "I Am Shannon" march will go from the intersection of Campbell and Barson streets to the Camouflage store on Pacific Avenue. Walkers are asked to gather at 6:30 p.m., and the walk will begin at 7 p.m.

Editor's note: We have made a significant correction to this story. The man who originally reported calling police, now says he didn't make that 911 call. See Sentinel correction to this story. For the purposes of transparency, the original story is below, but it will be rewritten.

Editor's note: An earlier version of this article included incorrect information about where Collins was going at the time of the stabbing. This version has been updated to indicate that she was walking from home to a hair appointment.